"Yeah, I loved her. I couldn't help it. She was my brother." Regan's brother Liam can't stand the person he is during the day. Like the moon from whom Liam has chosen his female namesake, his true self, Luna, only reveals herself at night. In the secrecy of his basement bedroom, Liam transforms into a beautiful girl with help from Regan's clothes and makeup. Now, everything is about to change—Luna is preparing to emerge from her cocoon. But are Liam's family and friends ready to welcome Luna into their lives? Told from Regan's point of view in the present and in flashback, this novel breaks new ground in YA literature with a sensitive and poignant portrayal of a transgender teen's struggle for self-identity and acceptance.